Dimension: about 28 x 23 x 23 mm,4 color option ,4pcs in pack,send 12 wires for free
Voltage: 12V DC,amperage rating:16A
All you need is a 3/4" hole and the switch will sit in nicely; no more square cut outs.
3 Pins With LED, ON /OFF [ SPST ]
How to connect: the middle part connects to the switch; the two side parts connect to the 12V DC ( Gold one -- Negative Pole; Silver one -- Positive Pole )